Generally, deep groove ball bearings can be used until their maximum life if used correctly. If used incorrectly, accidental premature damage may occur. This early damage relative to fatigue life is called the quality service limit of failure or accident.

Most of them are caused by irregularities in installation, use, and lubrication, or foreign matter intruding from the outside. Regarding the damage status of deep groove ball bearings, such as: bearing ring, rib jamming, the main reasons are insufficient lubricant, unsuitable, defective oil supply and discharge structure, intrusion of foreign matter, bearing installation error, shaft deflection Too large, or all of the above reasons.

Therefore, it is difficult to know the real cause of the damage only by investigating the bearing damage. However, if you know the machinery used for the bearing, the conditions of use, the structure around the bearing, and the situation before and after the accident, combined with the damage status of the bearing and several reasons, you can prevent similar accidents from happening again. The vibration of deep groove ball bearings is very sensitive to bearing damage, such as spalling, indentation, corrosion, cracks, wear, etc. will be reflected in the vibration measurement of rolling bearings, so by using a special bearing vibration measuring instrument (frequency analyzer, etc.) The magnitude of the vibration is measured, and the specific situation of the abnormality cannot be inferred through the frequency division.

The measured value varies depending on the conditions of use of the rolling bearing or the installation position of the sensor. Therefore, it is necessary to analyze and compare the measured values ​​of each machine in advance to determine the judgment standard. The temperature of the deep groove ball bearing can generally be inferred from the temperature outside the bearing chamber. It is also possible to directly measure the temperature of the outer ring of the rolling bearing by using the oil hole, which is more accurate.

Usually, the temperature of the rolling bearing starts to rise slowly with the operation of the bearing, and reaches a steady state after 1-2 hours. The normal temperature of rolling bearings varies with the heat capacity, heat dissipation, rotational speed and load of the machine. If the lubrication and installation are not suitable, the bearing temperature will rise sharply, and high temperature will occur.

If possible, a thermal sensor can be used to monitor the working temperature of the rolling bearing at any time, and to automatically alarm or stop the operation when the temperature exceeds the specified value to prevent the occurrence of burning shaft accidents.